"Mientras leía, me enamoré de la forma en que te quedas dormido: lentamente, y luego todo de una vez."

Simplified Meaning:

When you start reading a book, it might take some time for you to really get into the story. You read a few pages, maybe you’re curious but not very excited at first. Gradually, the characters and the plot become more interesting, and you find yourself more and more absorbed in what’s happening. Suddenly, without even realizing it, you’re completely hooked and can’t put the book down. This is similar to falling in love with someone. At first, you might just be interested or admire a few things about them. As you spend more time together, learn more about each other, your feelings grow. Then, almost unexpectedly, you realize you're deeply in love, feeling it strongly and quickly. People can apply this idea by giving themselves time to get to know someone or something new before expecting to feel intense emotions right away. It's okay for feelings to develop slowly before they become powerful. Whether it’s a new hobby, a new friend, or a potential partner, patience can lead to deep, meaningful love or passion.